|  |  | Overview
The "LAN Switching" chapter discussed problems inherent in a LAN and possible solutions to improve LAN performance. You learned about the advantages and disadvantages of using bridges, switches, and routers for LAN segmentation and the effects of switching, bridging, and routing on network throughput. Finally, you briefly learned about the benefits of Fast Ethernet and virtual local-area networks (VLANs). This chapter provides an introduction to VLANs and switched internetworking, compares traditional shared LAN configurations with switched LAN configurations, and discusses the benefits of using a switched VLAN architecture.
| Threaded Case Study
Washington Project: VLANs

As you begin the chapter on VLANs, think about why VLANs are being introduced. Also think about how, where, and when you might want to use VLANs at an elementary school site.